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Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

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import Ember from 'ember';

export default Ember.TextField.extend({
  type: 'number',
  _value: null,
  value: Ember.computed({
    get(_) { return this.get('_value'); },
    set(_, v) { return this.set('_value', parseInt(v)); }
  })
});

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import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

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import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

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"""
Grammar

JSON = "{" FIELD "}"
FIELD = ε | FIELDS
FIELDS = STRING ":" VALUE ("," FIELDS)*
VALUE = STRING | JSON
STRING = "\"" PRINTABLE "\""
PRINTABLE = (a | .. | z | A | .. | Z | 0 | .. | 9)*
"""

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"""
MIT License

Copyright (c) 2023 Ryan Siemens

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

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from __future__ import annotations

import argparse
import time
from copy import copy
from threading import Lock, Thread, local
from typing import Iterator, Literal

DB = {
    "A": 10,

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package autohunt;

import java.util.ArrayList;
import java.util.HashMap;
import java.io.File;
import java.io.IOException;
import java.awt.Rectangle;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.awt.Graphics;

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import requests
from queue import Queue
from collections import defaultdict
from pkg_resources import Requirement

META_URL = 'https://pypi.org/pypi/{req}/json'


class Digraph:
    def __init__(self):